Lighting unit



Jan. I4, 1930. L. c. DoANE 1,743,848

LIGHTING UNIT Filed March 9, 1927 2 Sheets-Sheet 1 ATTORNEY Jan. 14, 1930. Y C, DOANE 1,743,848

LIGHTING UNIT Filed March 9,Y 1927 f' 2 sheets-sheet 2 ATTORNEY Patented Jan. 14, 1930 umrau STATES PATENT OFFICE;

LEROY C. F MERIBEL CONNEGTICUT, ASSIGNOR T0 THE COMPANY, 0F MERIDEN, CONNECTICUT, .A CORPORATION 0F CONNECTICUT LIGHTING UNIT application mea' :laren e,

The present invention relatesto lighting' units and is more particularly directed toward a totally inclosed lightin unit having a metallic ,'deilector for directmg the light onto the ceiling, and a diffusing plate so arranged underneath the deector that light is transmitted downwardly and redirected so as to illuminate the outside of the delector.

The principal object of the present invenw tion is to provide a totally inclosed lighting unit of the above type so as to prevent the acn cumulation of dust and foreignmatter in the deilector and on the diffusing plate.

The present invention contemplates a lightl ingunit pf this type wherein the parts are so arranged that they may be readily assembled and disassembled and wherein a glasscover arranged above the deector may be tempo-l rarily supportedin an elevated position to permit raisingthe deflector 'and subsequent removal of the lower glass plate and. delecto-r if desired. l

Another object of the invention is to provide a lighting unit with a shade or similar part which may be lifted relative to the lamp socket and held in elevated position in a sim-v v ple manner.` v

Certain features of construction herein shown and described form the subject matter of a copending application 17 3,831, .tiled March 9, 1927. p

T he accompanying drawings show for purposes of illustrating the invention, one of the many possible embodiments in which the in- 35. vention may take form, it being understood 1 that the drawings are illustrative of the invention. rather than limiting the same. In these drawings: v Figure 1 is a sectional view with parts in elevation showing a lighting unit of the above t pe, parts being shown in an elevated position in dotted lines;

Figure 2 is a .detached elevational view of a socket housingand lockin ring;

Figure 3 is a top plan view o the construetion shown in Figure 2 and Figures 4 and 5 are elevational views illustrating the assembly of the lighting unit. A lamp socket 10 is supported in any com venient manner inside a rawn sheet metal 1927. Serial No. 173,882..

socket housing 11, and this socket housin is u 'carried in the lower end of a loop 12 ,re erably externally threaded as indicate at 13. A lamp 14 is carried in the lamp socket in the usual manner. As hereshown, the lower end of the socket housing 11 supports three straps 15, 16 and 17. The upper ends of these straps are bent inwardl as indicated at 18 to pass through holes in the socket housing 11. These holes are at the upper ends of depressions made in the side of the wall of the socket hous ,ing to accommodate the thickness of the straps.

A locking sleeve 19 is slidably carried on the outside of the socket housing 11 and is` held in place by a rivet 20 fastened to the socket housing 11 passin through a Z-sliaped slot 21 in thesleeve. his slot is so shaped that it will lock the sleeve in* either the lower or the upper .position or permits sliding it from one position to the other.A -When the sleeve is raised, the holes in the socket housing are available'for inserting the ends 18 of the straps, and, when the ring 19 is moved down to the full line position indicated in Figures 1 and 2, theupper ends of these straps are locked in position. The upper portions 22 of the straps are comparatively close to one another, being suilicientl spaced to accommodate the neck of the lamp ulb, while the lower'portions 23 of the straps are spread apart as indicated, and a ring 24, here shownras a sheet metal stamping. According to the construction herein illustrated, the lower ends of the stra s are provided with outwardly projecting eet 25 which pass through holes 26 in the ring 24 so as to support the ring. In assembling this form of strap and ring, the lower ends of the straps are passed through the' holes 26 in the stamping 24 and the upper ends of the straps are then brought close together and attached to the socket cover as above described.

The construction so far described rovides a substantially rigid frame work or supporting the riglht .controllin parts of the lighting'unit w ich will now described.

An outer cover member 27, which may take the form of a cup-shaped sheet metal stamp' ing' is arranged so as to pass downwardly l100 about the socket housin 11 and the ring 19. It is designed to cover t e housing and ring, and the vneck of the bulb 14. The lower end or skirt 28 of the outer 'cover member 27 carries a number of straps 29 held in place by thumb screws 30. These straps 29 aref bent as indicated so as to engage underneath a shade, here shown in the form of a comparatively flat glass cover plate 31. The cover member 27 may be clamped in the lower position by a ring 32 threaded onto the loop 12. In order to permit raising the glass cover plate 31 and -stampin 27 and support them in the raised position, t e ring 19 is outwardly flanged at 1ts upper end as indicated at 33, and this flange is cut away as indicated at 34 in line with the hook shaped members 29. The severed portions of the flange 33 are bent upwardly. as indicated at 35. This construction permits raising the cover to pass the .hooks 29 through the openings in the flange 33. The parts ma then be relatively turned and the hook mem ers 29 will then rest in the flange 33 between the u wardly bent prongs 35. The flange 33 pre erably fits the innerk wall of the cover 27 so that the cover is held in alignment.

A defiector 36, preferably made-of sheet metal and curved'as indicated, is arranged about the light source 14. The lower small diameter art 37 of the deflector is slightly larger in iameter than the ring 24, whi e the upper part 38 of the deflector is approximately the same diameter as the glass cover plate 31. A glass diffuser 40 is arranged underneath the light source. As here shown,

' this glass diffuser is somewhat larger in its external diameter than the ring 24. The upper part of the glass diffuser-extends inwardly in the form of a flange or lip as indicated at 41 so as to overlie the outwardly extending feet 25 0f .the supporting straps 15, 16 and 17.

vIn assembling the lighting unit, the upper glass cover plate 31 is fastened to the covei` member V2 7 and passed far enough up along the chain to permit attaching the straps 15, 16 and 17 to the socket housing. The cover plate 31 and stamping 27 may be supported on the flange 33 as above described. The deilector 36 may be passed into position by turning it at an angle as indicated in Figure 4 and passing it up ab'ove the ring 24 to bring itto the position indicated inFigure 5. Then the glass diffuser 40 maybe passed about the ring 24 as indicated in Fi re 5 and turned about so that the inward y directed flange 41 will rest on the feet 2 6. The glass cover may then-be lowered to the full line position indicated in Figure 1..

When one desires to clean the inside of the unit or to renew the lamps, the cover plate 'may be raised to the :dotted line position o f through the inwardly directed lip or flange 41 of the diffuserso as to fall ontothe outside surface of thedeflector 36, thereby illuminating it. The ath of such a ray is indicated by the letter gli Y From the foregoing it will be apparent that there has Vbeen provided a totally enclosed dust proof lighting unit of the semiindirect'type'-which Ymay be shipped in a knocked down condition and assembled by anyone.

It is obvious that -the invention may be,

embodied in many' forms and constructions Within the scope ofthe claims, and I- wish it to be understood that the particular form shown is but one-of the many possibleforms. Various modifications and changes being possible, I do not otherwise limit myself in any way with'respect thereto.

What is claimed is:

1. In a lighting unit, a lamp socket, a lamp in the socket, a socket housing, a sup ort for the socket housing, a cover norma ly supported from the top of the socket housing and surroundingthe socket housing and neck of the lamp, a shade, and means for supporting the shade and cover in an elevated position, said means including parts which permit raising the cover when in one angular position and prevent lowering it when in the other angular position.

2. In a lighting unit, a lamp socket, a lamp in the socket, a socket housing, a support for the socket housing, ya, cover normally supported from 'the top of the socket housin and surrounding the socket housing and nec of the lamp, a shade, a plurality of shade supporting members carried by the lower end of the cover, and a membercarried by the socket housing having cut away portions to' permit the shade supporting members to pass bi when the cover and shade are raised, and ot er portions to sup ort the shade supporting members when t e cover is turned angularly.

end of the cover, and an outwardly flanged ring carried by the socket housing and engaging the inner wall of the cover, the ring having cut away ortions to permit the shade supporting mem ers to pass by`when the` -support for the defiector, alight transmit-` ting cover plate, supports fo'r'the cover plate to hold it closely'adjacent the deflectoror elevated a substantial distance'above, it, and a glass diffuser carried underneath .the deflector, the diffuser having aninwardly di rected flange adjacent the deflector -to`pre` vent the entrance of dust.

5. An inclosed lighting fixture comprising A a central, downwardly openinglamp socket, a lamp in the socket, a sockethousing, a horizontal ringlv below the lamp, side rods for supporting the ring from the socket housing, an outwardly and upwardly Haring deflector carried by the ring for. deflecting light upwardly, a cover outside the socket housing, and a transparent glass cover plate carried by the cover and extending over tothe upper edge of the deflector. l

6. An inclosed lighting fixture comprising a central, downwardly openinglamp socket, a lamp in the socket, a socket housing, a horizontal ring below the lamp, side rods for sup.- porting the ring from the socket housing, an outwardly and upwardly flaring deiector carried by the ring for deflecting light upwardly, a cover outside the socket housing, a transparent glass cover plate carried by the cover and extending over to the upper edge of the deflector, and devices for supporting the cover and cover plate spaced above the defiector.

7. An inclosed lighting fixture comprising a central, downwardly opening lampsocket,

, supporting devices for the lamp socket, a lamp in the socket an outwardly and upwardly Hal-in g delcctor surrounding the lamp and arranged to upwardlv reflect horizontally emitted light, means for removably supporting the decctor, said means including members extending inwardly and upwardly from the lower edge of the deiiector and passing adj acent the neck of the lamp, the parts being so interrelated that it is necessary to 'first raise the deflector before itcan be removed, a light transmitting glass cover plate for the deflector, and means for supporting the cover plate in two positions in one of which the outer edge is adjacent the upper edge of the defiector and in the other of which the plate is raised to permit raising the defiector for removal.

8. An enclosed lighting fixture comprising a central, downwardly opening lamp socket, supporting devices for a lamp socket a lamp in the socket, an outwardly and upwardly flaring deflector surrounding the lamp and arranged to upwardly reect horizontally emit- ,ted light, a glass diuser underneaththe lamp, the diffuser havin an internal lip on which the lower edgeo ythe deflector rests,

means for removably supporting the deflector and diffuser, said means including members 1 extendinginwardly and upwardly from the lip of the diffuser and passing adjacent the neck of the lamp, the parts being so interrelated that itis necessary to first raise the defiector before the diffuser or deflector can be removed, a lighting transmitting glass cover plate for the deflector, andmeans for-supporting the cover plate in two positions in one of which the outer edge is adjacent the upper edge of the vdelector and in the other bf which the plate is raised to permit raising the defiector for removal.

9. An enclosed lighting fixture comprising a central downwardl opening lamp socket, supporting devices or the lamp socket, a

arranged to upwardly refiect horizontally emitted light, a socket housing, means vfor removably supporting the delector, said means includin members extendinginwardyly and `upward y from the lower edge of the deflector and passing adjacent the neck of the fiector attached to the housing cover, and

means for supporting the cover plate and lamp in the socket, an outwardly and upwardl ly flaring deflector surrounding thelamp and housing cover in two positions in one of which the outer edge of the cover plate is adjacent the upper edge of the deiiector and in the other of which the cover plate is raised to permit raising the defiector for removal.

Signed at Meriden, in the county of New Haven and State of Connecticut, this 7 day of March, 1927.

LEROY C. DOANE.' 

